Doosan D480256 WHEEL CYLINDER AS for B15/18S & D15/18S2

Overview

The D480256 WHEEL CYLINDER AS is a Doosan brake wheel cylinder assembly for a range of compact Doosan counterbalance forklifts. Mounted inside each brake drum, the wheel cylinder converts hydraulic line pressure into the force that pushes the brake shoes outward, making it a critical link in the service brake system. Warning signs of a failing unit include a soft or spongy pedal, reduced stopping power, uneven braking between wheels, and brake fluid weeping around the backing plate. Fitting a correctly specified D480256 helps restore consistent, reliable braking performance.

Compatibility

This D480256 for B15/18S and related trucks covers several popular Doosan forklift series, grouped as follows:

• B15/18S series (A161640)
• D10/15/18S series (D600988)
• D15/18S series (SB1019)
• D15/18S2 series (SB1024)
• D20SC-2

The codes in parentheses are the catalog reference numbers for those model groups. Because brake components can differ between serial ranges, always verify fitment against your truck’s model and serial number, or send us the data plate details before ordering.

Quality and Reliability

This wheel cylinder assembly is built to match Doosan’s original component geometry, including bore diameter, mounting pattern, and pushrod length, so it installs in place of the worn unit without modification. Its seals and dust boot are designed to withstand brake fluid exposure and keep contamination out of the bore, while the machined cylinder body supports smooth piston travel for even shoe actuation. Forklifts that cycle their brakes hundreds of times per shift — typical of loading dock and warehouse duty — depend on a healthy hydraulic brake circuit, and using correctly matched parts is one of the simplest ways to protect both uptime and operator safety.

Installation and Maintenance Tips

Replace wheel cylinders in pairs, or as a full axle set, so braking force stays balanced.

• Inspect brake shoes, drums, and return springs while the cylinder is accessible, and renew any fluid-soaked friction material.
• Use clean hydraulic brake fluid of the grade specified in your Doosan service manual.
• Bleed the brake circuit thoroughly after installation to remove trapped air before the truck returns to service.
• Check for leaks at the bleeder screw, fittings, and rubber boot during the first inspections after fitting.
• Torque mounting hardware and hydraulic fittings to the values given in the service manual.

Why Order from Us

ForkliftPartsSearch.com specializes in Doosan forklift parts, from engine and drivetrain components to brake system assemblies such as the D480256 WHEEL CYLINDER AS. Our team can cross-check your model and serial number against catalog data, suggest the related brake components you may need for a complete service, and provide current pricing and availability on request. If you maintain mixed fleets of B15/18S, D15/18S2, or D20SC-2 trucks, we can help you consolidate Doosan parts sourcing with a single supplier. Submit a quote request for the D480256 today and keep your forklifts braking safely.